Roof Ponding Calculator
Calculate the weight and load of standing water on flat roofs with our comprehensive calculator. Determine potential structural risks and drainage requirements based on roof area and ponding depth.
Step 1: Roof Specifications
Understanding Roof Ponding
Ponding occurs when water accumulates on flat roofs due to inadequate drainage. Just 1 inch of water adds approximately 5.2 lbs per square foot of load, which can exceed structural limits.
Step 2: Calculation Parameters
About Water Weight
Water weighs approximately 62.4 pounds per cubic foot. Ponding depth is the critical factor – even small depths over large areas create significant structural loads that may exceed design limits.
Ponding Load Results
Total Water Weight
Depth Comparison Table
| Ponding Depth | Water Weight | Load per sq ft | Risk Level |
|---|
Load Distribution Analysis
Ponding Weight Formula
Weight = Area × (Depth/12) × Water Density × Safety Factor
To calculate ponding weight: Convert depth to feet, multiply by roof area to get volume, multiply by water density, then apply safety factor for structural analysis.
Need Professional Structural Analysis?
Connect with our structural engineering experts for comprehensive roof assessments, drainage solutions, and load analysis to ensure building safety and compliance.
Get Professional Analysis